String Length in PHP

PHP Basic

Introduction to PHP PHP Starting Requirements Downloading XAMPP Local Server PHP Variable Concept and Data Type PHP Coding Syntax Showing Output in PHP PHP String Concatenation Increment & Decrement in PHP PHP Logical Operator and Usage Part-1 PHP Logical Operator and Usage Part-2 PHP Comparison Operators Arithmetic and Assignment Operators PHP Switch Case Statement For loop in PHP Super Global Variable $_REQUEST and $_GET Part-1 String Length in PHP Function Declaration and Usage

Most of the time it needs to find out the total size of a declared string. This helps during coding in form validation, in form input or something like that. Php has a built-in function to find out the total size of a string. The function is strlen() ; This function usually takes one parameter that is string and returns the size of that string. We can understand the process by below code


<?php

    $bird = "Crow is a black bird";
    $size = strlen($bird);
    echo "The size is " . $size;
?>

Output


The size is 20

The output of this program is "The size is 20" that means string "Crow is a Blackbird" has 20 characters. It needs to remember in the programming world, space is also regarded as a character. We can see other examples also from below


<?php
    
    $program = "PHP is a popular web programming language in today's world";
    echo strlen($program);

?>

The output of the PHP code for example 2 is

In this way, we can easily find out the size of a string.